# Latest

**URL:** https://discourse.julialang.org/latest.md?page=578

[Latest](https://discourse.julialang.org/latest.md) · [Categories](https://discourse.julialang.org/categories.md) · [Tags](https://discourse.julialang.org/tags.md)

**Page:** 579

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## [How to change \`annotate!\` background color?](https://discourse.julialang.org/t/how-to-change-annotate-background-color/40606)

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**Author:** [@takuizum](https://discourse.julialang.org/u/takuizum)\
**Replies:** 4\
**Last updated:** [October 11, 2023, 6:53pm UTC](https://discourse.julialang.org/t/how-to-change-annotate-background-color/40606 "2023-10-11T18:53:21Z")

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I’m trying to use Plots and annotate function to plot a numerical value onto the line. plotly() plot(sin) annotate!(0, sin(0), text("0")) It works not bad. Furthermore, I want to put a text on the line with removing a…

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## [Error in NL Optimization involving integral of Incomplete Beta Function](https://discourse.julialang.org/t/error-in-nl-optimization-involving-integral-of-incomplete-beta-function/104627)

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**Author:** [@thvo1304](https://discourse.julialang.org/u/thvo1304)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 6:25pm UTC](https://discourse.julialang.org/t/error-in-nl-optimization-involving-integral-of-incomplete-beta-function/104627 "2023-10-11T18:25:20Z")

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Hello everyone, I’m trying to build an optimization problem using Julia but keep getting error. My objective function is: Max ∫01 Bx(n - λn, λn + 1) ⁄ Bx(n - &lambda - 1;n…

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## [Plotting only the contents of a plot/heatmap and hiding everything else using Plots.jl](https://discourse.julialang.org/t/plotting-only-the-contents-of-a-plot-heatmap-and-hiding-everything-else-using-plots-jl/104469)

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**Author:** [@ferrolho](https://discourse.julialang.org/u/ferrolho)\
**Replies:** 1\
**Last updated:** [October 11, 2023, 6:17pm UTC](https://discourse.julialang.org/t/plotting-only-the-contents-of-a-plot-heatmap-and-hiding-everything-else-using-plots-jl/104469 "2023-10-11T18:17:48Z")

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Hi! I would like to plot only the very contents of a plot (a heatmap in this case) using Plots.jl. I’ve set the aspect ratio to 1:1, hidden the axes, hidden the color bar, set the margins to zero, and set the image size…

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## [Extracting vector of contour lines from Makie.contour?](https://discourse.julialang.org/t/extracting-vector-of-contour-lines-from-makie-contour/104866)

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**Author:** [@rkube](https://discourse.julialang.org/u/rkube)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 5:37pm UTC](https://discourse.julialang.org/t/extracting-vector-of-contour-lines-from-makie-contour/104866 "2023-10-11T17:37:43Z")

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Hi, I’d like to extract contour lines from a Makie contour plot as a vector, like the black lines in the plot here. Is there any way to do that?

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## [Engineer looking for opportunity](https://discourse.julialang.org/t/engineer-looking-for-opportunity/104862)

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**Author:** [@LucasMSpereira](https://discourse.julialang.org/u/LucasMSpereira)\
**Replies:** 1\
**Last updated:** [October 11, 2023, 5:08pm UTC](https://discourse.julialang.org/t/engineer-looking-for-opportunity/104862 "2023-10-11T17:08:54Z")

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Hi, everyone. I’m currently looking for a job. I love scientific programming in Julia, and I’m interested in data analysis, machine learning, games, engineering, graphics, and mathematics. I have a Bachelor’s in mechani…

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## [JuliaHub: login gives internal server error](https://discourse.julialang.org/t/juliahub-login-gives-internal-server-error/104858)

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**Author:** [@jxxcarlson](https://discourse.julialang.org/u/jxxcarlson)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 5:08pm UTC](https://discourse.julialang.org/t/juliahub-login-gives-internal-server-error/104858 "2023-10-11T17:08:48Z")

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Hello! I have some code I would like to run on JuliaHub. I signed up, but when I try to login with my username and password, I get this:

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## [Issues installing python packages with CondaPkg](https://discourse.julialang.org/t/issues-installing-python-packages-with-condapkg/104552)

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**Author:** [@Ignacio\_Loaiza](https://discourse.julialang.org/u/Ignacio_Loaiza)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 4:57pm UTC](https://discourse.julialang.org/t/issues-installing-python-packages-with-condapkg/104552 "2023-10-11T16:57:43Z")

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Hi everyone! I have a Julia package, which I have been developing for some time. Today I was making some changes to it, and at some point something got broken that I don’t know how to fix. The problem happens when I try…

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## [How to rotate a Meshes.jl graphic?](https://discourse.julialang.org/t/how-to-rotate-a-meshes-jl-graphic/104865)

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**Author:** [@\_stla](https://discourse.julialang.org/u/_stla)\
**Replies:** 0\
**Last updated:** [October 11, 2023, 4:32pm UTC](https://discourse.julialang.org/t/how-to-rotate-a-meshes-jl-graphic/104865 "2023-10-11T16:32:14Z")

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Hello, To rotate a Meshes.jl graphic, I do: fig, ax, plt = MeshViz.viz( Meshes.Box(Meshes.Point(-2.5, -2.5, -0.5), Meshes.Point(2.5, 2.5, 1.5)); alpha = 0 ) # bounding box to fix the frame ax.show\_axis =…

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## [ERROR: LoadError: ArgumentError: Package LibGit2 does not have LibGit2\_jll in its dependencies](https://discourse.julialang.org/t/error-loaderror-argumenterror-package-libgit2-does-not-have-libgit2-jll-in-its-dependencies/104852)

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**Author:** [@goedman](https://discourse.julialang.org/u/goedman)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 4:29pm UTC](https://discourse.julialang.org/t/error-loaderror-argumenterror-package-libgit2-does-not-have-libgit2-jll-in-its-dependencies/104852 "2023-10-11T16:29:39Z")

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Since a number of weeks I can no longer initiate Pkg mode in Julia-1.11-DEV… . Any hints on how to work around that? Thanks! In my .julia/environments/Manifest.toml the entry for LibGIT2 is: \[\[deps.LibGit2\]\] deps = \[…

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## [Proper way to install Julia with \`OPENBLAS\_NUM\_THREADS=1\`](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855)

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**Author:** [@pat-alt](https://discourse.julialang.org/u/pat-alt)\
**Replies:** 4\
**Last updated:** [October 11, 2023, 3:29pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855 "2023-10-11T15:29:36Z")

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Related to: Odd thread calling behavior on HPC I’ve been experiencing some issues on our uni’s HPC due to OpenBLAS thread calling (see link to related discussion above). The issue can be resolved by just adding/modifyin…

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## [Display with different plots show the same plot several times](https://discourse.julialang.org/t/display-with-different-plots-show-the-same-plot-several-times/103897)

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**Author:** [@ovt](https://discourse.julialang.org/u/ovt)\
**Replies:** 1\
**Last updated:** [October 11, 2023, 3:06pm UTC](https://discourse.julialang.org/t/display-with-different-plots-show-the-same-plot-several-times/103897 "2023-10-11T15:06:41Z")

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Here is a minimal example: using PlotlyLight display(Plot(y=rand(10))) display(Plot(y=rand(10))) If I run this code inside a script, it will open two tabs in my browser with the same plot on both tabs. Somehow, it doe…

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## [PyCall pyimport() fails and exits julia](https://discourse.julialang.org/t/pycall-pyimport-fails-and-exits-julia/104845)

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**Author:** [@harsh1kumar](https://discourse.julialang.org/u/harsh1kumar)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 2:45pm UTC](https://discourse.julialang.org/t/pycall-pyimport-fails-and-exits-julia/104845 "2023-10-11T14:45:41Z")

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Hello Good People of Julia, I have recently started to work with Julia. I am trying to use PyCall and import packages like numpy and pandas but I am encountering an failure. Details below: Before using PyCall, I rebui…

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## [Makie errorbars in legend look awkward](https://discourse.julialang.org/t/makie-errorbars-in-legend-look-awkward/104832)

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**Author:** [@Salmon](https://discourse.julialang.org/u/Salmon)\
**Replies:** 3\
**Last updated:** [October 11, 2023, 2:10pm UTC](https://discourse.julialang.org/t/makie-errorbars-in-legend-look-awkward/104832 "2023-10-11T14:10:50Z")

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Hi, somehow I cannot find the solution to this problem online. I want a simple plot with errorbars which are shown in the legend: fig = Figure() ax = Axis(fig\[1,1\]) errorbars!(ax,1:10,rand(10),0.05\*ones(10),color = :…

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## [Avoiding dynamic dispatch in loops with non-concrete vector types](https://discourse.julialang.org/t/avoiding-dynamic-dispatch-in-loops-with-non-concrete-vector-types/104851)

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**Author:** [@f.ij](https://discourse.julialang.org/u/f.ij)\
**Replies:** 1\
**Last updated:** [October 11, 2023, 1:54pm UTC](https://discourse.julialang.org/t/avoiding-dynamic-dispatch-in-loops-with-non-concrete-vector-types/104851 "2023-10-11T13:54:25Z")

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Let’s say I have some parametric struct struct Foo{T} ... end, and I prepare a vector of Foos. I now have a loop that for a given vector, which doesn’t mutate during the loop, picks a random index in the loop, and…

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## [Stall when trying to create sysimage for Plots.jl](https://discourse.julialang.org/t/stall-when-trying-to-create-sysimage-for-plots-jl/104854)

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**Author:** [@Kruxigt](https://discourse.julialang.org/u/Kruxigt)\
**Replies:** 0\
**Last updated:** [October 11, 2023, 1:49pm UTC](https://discourse.julialang.org/t/stall-when-trying-to-create-sysimage-for-plots-jl/104854 "2023-10-11T13:49:32Z")

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Hi! I’m working in steps towards building a sysimage with PackageCompiler for my own package. I manage to build a sysimage for CSV.jl Now I’m following the guide https://julialang.github.io/PackageCompiler.jl/dev/exam…

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## [\`JuliaMath/Decimals.jl\` maintanence status](https://discourse.julialang.org/t/juliamath-decimals-jl-maintanence-status/104849)

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**Author:** [@artemsolod](https://discourse.julialang.org/u/artemsolod)\
**Replies:** 0\
**Last updated:** [October 11, 2023, 1:20pm UTC](https://discourse.julialang.org/t/juliamath-decimals-jl-maintanence-status/104849 "2023-10-11T13:20:34Z")

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JuliaMath/Decimals.jl has not seen a new release since January 2020. There are 8 open pull requests (one of those adding tryparse which could help with reading CSV files Support tryparse by nicolamos · Pull Request #55 ·…

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## [Julia workers in containers. \`stdout\` issue](https://discourse.julialang.org/t/julia-workers-in-containers-stdout-issue/104767)

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**Author:** [@ivborissov](https://discourse.julialang.org/u/ivborissov)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 9:48am UTC](https://discourse.julialang.org/t/julia-workers-in-containers-stdout-issue/104767 "2023-10-11T09:48:36Z")

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Hi, I am experiencing a strange issue with Julia workers running in docker container instances in Azure . I am able to run distributed computations on workers, so everything seems fine, except that workers don’t print an…

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## [Is it possible for complex matrix multiplication and adjoint speed to catch up with matlab?](https://discourse.julialang.org/t/is-it-possible-for-complex-matrix-multiplication-and-adjoint-speed-to-catch-up-with-matlab/104785)

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**Author:** [@13299118606](https://discourse.julialang.org/u/13299118606)\
**Replies:** 38\
**Last updated:** [October 11, 2023, 12:56pm UTC](https://discourse.julialang.org/t/is-it-possible-for-complex-matrix-multiplication-and-adjoint-speed-to-catch-up-with-matlab/104785 "2023-10-11T12:56:38Z")

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I need to process a large number of complex matrix multiplications in some programs, but this is very slow, especially after using Distributed parallelism, matrix multiplication will be more than 10 times slower. The spe…

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## [Agents with an extent](https://discourse.julialang.org/t/agents-with-an-extent/104840)

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**Author:** [@FMP](https://discourse.julialang.org/u/FMP)\
**Replies:** 4\
**Last updated:** [October 11, 2023, 12:37pm UTC](https://discourse.julialang.org/t/agents-with-an-extent/104840 "2023-10-11T12:37:28Z")

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Hello! I am currently working on an ABM for growing bacteria using Agents.jl (akin to the, now outdated, example in the documentation) and it got me wondering whether it is/could be possible to have an “extensive” agent…

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## [Odd thread calling behavior on HPC](https://discourse.julialang.org/t/odd-thread-calling-behavior-on-hpc/104789)

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**Author:** [@pat-alt](https://discourse.julialang.org/u/pat-alt)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 12:23pm UTC](https://discourse.julialang.org/t/odd-thread-calling-behavior-on-hpc/104789 "2023-10-11T12:23:24Z")

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I’ve been running Julia on my university’s HPC using a self-installed version of Julia (through juliaup) and have noticed odd thread calling behavior. When running the following Julia script a = zeros(10) Threads.@thre…

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## [Best all-purpose text or website for learning Julia?](https://discourse.julialang.org/t/best-all-purpose-text-or-website-for-learning-julia/104619)

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**Author:** [@RobertTalbert](https://discourse.julialang.org/u/RobertTalbert)\
**Replies:** 27\
**Last updated:** [October 11, 2023, 12:05pm UTC](https://discourse.julialang.org/t/best-all-purpose-text-or-website-for-learning-julia/104619 "2023-10-11T12:05:41Z")

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Hi, I’m new to the Julia language but I have some very modest background in Python and R. I’ve been learning what I can of Julia from Exercism.org and from taking some old R projects and “translating” them to Julia. Both…

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## [Bring back to life Julia 0.4 code](https://discourse.julialang.org/t/bring-back-to-life-julia-0-4-code/104820)

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**Author:** [@berceanu](https://discourse.julialang.org/u/berceanu)\
**Replies:** 3\
**Last updated:** [October 11, 2023, 11:23am UTC](https://discourse.julialang.org/t/bring-back-to-life-julia-0-4-code/104820 "2023-10-11T11:23:01Z")

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I am trying to port an older Julia 0.4 code that uses ODE.jl and I find it stumbles on this line tout, aout = ode45((t,a)-\>F(t,a, N,p,q,m₀,n₀,J,σ,Ω,κ,f), a₀, \[0., 10\]) The code is a single, small file. The error I get …

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## [Julia Language Server failed to precompile](https://discourse.julialang.org/t/julia-language-server-failed-to-precompile/103286)

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**Author:** [@MBaisset](https://discourse.julialang.org/u/MBaisset)\
**Replies:** 5\
**Last updated:** [October 11, 2023, 10:55am UTC](https://discourse.julialang.org/t/julia-language-server-failed-to-precompile/103286 "2023-10-11T10:55:42Z")

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Hello, I’ve tried to install Julia 1.9.3 on my Mac OS Mojave 10.14.6 (previously using Julia 1.8.5 that perfectly worked). I use VScode as editor, but now with Julia 1.9.3, VScode Julia language server fails precompili…

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## [Read special characters using CSV.read](https://discourse.julialang.org/t/read-special-characters-using-csv-read/104604)

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**Author:** [@TimG](https://discourse.julialang.org/u/TimG)\
**Replies:** 22\
**Last updated:** [October 11, 2023, 10:40am UTC](https://discourse.julialang.org/t/read-special-characters-using-csv-read/104604 "2023-10-11T10:40:35Z")

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Hi, I’m trying to read a file (here) that contains the following (as it appears in Excel): Reading the data file, reads the special character incorrectly: MP\_names = CSV.read("All MPs 23.07.csv", DataFrame) println(…

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## [Tube plots?](https://discourse.julialang.org/t/tube-plots/65999)

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**Author:** [@mcmwright](https://discourse.julialang.org/u/mcmwright)\
**Replies:** 20\
**Last updated:** [October 11, 2023, 10:38am UTC](https://discourse.julialang.org/t/tube-plots/65999 "2023-10-11T10:38:40Z")

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I use a lot of 3D line plots in my teaching, and I’ve been trying different visualization packages to make them . Is there anything in the Julia graphics ecosystem that could show the line as a ‘tube’ with a lighting mod…

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## [Problem adding IJulia as a package dependency](https://discourse.julialang.org/t/problem-adding-ijulia-as-a-package-dependency/104841)

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**Author:** [@Bruno\_Amorim](https://discourse.julialang.org/u/Bruno_Amorim)\
**Replies:** 0\
**Last updated:** [October 11, 2023, 10:24am UTC](https://discourse.julialang.org/t/problem-adding-ijulia-as-a-package-dependency/104841 "2023-10-11T10:24:11Z")

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I have writen a small script (GitHub - BacAmorim/ijuliaup: Simple script to help remove/add IJulia kernels after updating Julia.) that provides a convient way of removing and adding new IJulia kernels (with multiple thre…

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## [Normalizing a transfer function](https://discourse.julialang.org/t/normalizing-a-transfer-function/104834)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 3\
**Last updated:** [October 11, 2023, 10:20am UTC](https://discourse.julialang.org/t/normalizing-a-transfer-function/104834 "2023-10-11T10:20:24Z")

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Is there already a function to normalize a transfer function? I have: TransferFunction{Continuous, ControlSystemsBase.SisoRational{Float64}} -951.729934283765s^2 -----------------------…

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## [JuMP get number of iterations](https://discourse.julialang.org/t/jump-get-number-of-iterations/8452)

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**Author:** [@nantonel](https://discourse.julialang.org/u/nantonel)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 9:05am UTC](https://discourse.julialang.org/t/jump-get-number-of-iterations/8452 "2023-10-11T09:05:40Z")

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Is there a way to access the number of iterations apart from the log of the solver? I’m comparing different solvers and I would like to store in a vector the number of iteration each one takes. I couldn’t really find a…

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## [Define package by url and branch in Project.toml](https://discourse.julialang.org/t/define-package-by-url-and-branch-in-project-toml/104810)

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**Author:** [@brucala](https://discourse.julialang.org/u/brucala)\
**Replies:** 3\
**Last updated:** [October 11, 2023, 9:02am UTC](https://discourse.julialang.org/t/define-package-by-url-and-branch-in-project-toml/104810 "2023-10-11T09:02:18Z")

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I’m wondering if it’s possible to defined a package in the Project.toml file by its github url and branch. In my environment I can do pkg\> add https://github.com/pathto/MyPackage.jl#mybranch, but only the Manifest.toml …

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## [\[ANN\] Ephemerides.jl - A pure Julia binary ephemeris reader](https://discourse.julialang.org/t/ann-ephemerides-jl-a-pure-julia-binary-ephemeris-reader/104830)

<div class="topic-metadata">

**Author:** [@MicheleCeresoli](https://discourse.julialang.org/u/MicheleCeresoli)\
**Replies:** 0\
**Last updated:** [October 11, 2023, 7:25am UTC](https://discourse.julialang.org/t/ann-ephemerides-jl-a-pure-julia-binary-ephemeris-reader/104830 "2023-10-11T07:25:04Z")

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Hello everyone, I’m happy to present you Ephemerides.jl, a package that provides fast, thread-safe and allocation-free access to binary JPL SPK and PCK ephemeris files. Completely written in Julia, it enables Automatic-…

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